CN215907971U

CN215907971U - EGR cooler

Info

Publication number: CN215907971U
Application number: CN202121590445.1U
Authority: CN
Inventors: 韦世宝; 闭彬强
Original assignee: Guangxi Yulin Kunda Machinery Manufacturing Co ltd
Current assignee: Guangxi Yulin Kunda Machinery Manufacturing Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-25
Anticipated expiration: 2031-07-13

Abstract

The application discloses an EGR cooler for improving the reliability of the cooler. The application includes: casing, cooling core, air inlet joint and the flange of giving vent to anger, the air inlet joint with casing fixed connection, the flange of giving vent to anger with the casing is connected, the end of giving vent to anger of cooling core is provided with out the gas head, be provided with the recess on the outer wall of the flange of giving vent to anger, it is used for sealed sealing washer to be provided with on the gas head to give vent to anger, go out the gas head with the flange of giving vent to anger links up, the sealing washer is set in form seal structure in the recess.

Description

EGR cooler

Technical Field

The application relates to the technical field of internal combustion engines, in particular to an EGR cooler.

Background

In the conventional EGR cooler, parts are welded by adopting a manual argon arc welding mode, the welded product has a fixed structure without scalability and low production efficiency, and the argon arc welding cost is high. In the EGR cooler with such a structure, in a high-temperature and variable-pressure pulse environment, the heat absorbed from the exhaust gas and the pulse action of the cyclic reciprocation are difficult to release the expansion stress because the parts are welded and fixed, and the product is easily deformed and damaged under the action of thermal expansion, thermal stress and thermal fatigue.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present application provides an EGR cooler including:

casing, cooling core, air inlet joint and the flange of giving vent to anger, the air inlet joint with casing fixed connection, the flange of giving vent to anger with the casing is connected, the end of giving vent to anger of cooling core is provided with out the gas head, be provided with the recess on the outer wall of the flange of giving vent to anger, it is used for sealed sealing washer to be provided with on the gas head to give vent to anger, go out the gas head with the flange of giving vent to anger links up, the sealing washer is set in form seal structure in the recess.

Optionally, the air outlet flange is provided with two grooves, and the air outlet head is provided with two sealing rings.

Optionally, the air outlet head comprises an air inlet end and an air outlet end, the air inlet end is used for being connected with the cooling core, the sealing ring is arranged on the air outlet end, and the air outlet end is connected with the air outlet flange in a sealing mode through the sealing ring.

Optionally, the air outlet end is fixed on the upper part of the air inlet end.

Optionally, the outer diameter of the air outlet end is smaller than the outer diameter of the air inlet end.

Optionally, the air outlet flange is connected with the shell through bolts.

Optionally, a fixing support is arranged on the housing, and the fixing support is used for fixing the housing.

Optionally, the air inlet joint is fixedly connected with an air inlet end of the cooling core, and the air inlet joint is connected with the shell in a welding mode.

Optionally, the air conditioner further comprises an air inlet flange, and the air inlet flange is fixedly connected with the shell.

Optionally, the air inlet flange is fixedly connected with the air inlet joint through a bolt.

According to the technical scheme, the method has the following advantages:

in the EGR cooler that this application provided, be provided with the recess on the outer wall of the flange of giving vent to anger, give vent to anger and be provided with the sealing washer that is used for sealing on the head, go out the gas head and link up with the flange of giving vent to anger, the sealing washer inlays and forms seal structure in the recess, the cooling core is heated after warping, the thermal energy and the thermal stress etc. that the transmission was come in the waste gas can be offset to the concertina movement to the cooling core to the life-span of extension product improves the reliability of cooler.

Drawings

FIG. 1 is a schematic block diagram illustrating an exemplary EGR cooler configuration provided herein;

FIG. 2 is a partial schematic illustration of an embodiment of an EGR cooler provided herein;

fig. 3 is a schematic structural diagram of a connection portion of an air outlet head and an air outlet flange provided in the present application.

Detailed Description

Based on this, the present application provides an EGR cooler for improving the reliability of the cooler.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.

The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 3, the present application provides an EGR cooler comprising:

casing 1, cooling core 2, air inlet joint 3 and the flange 4 of giving vent to anger, air inlet joint 3 and 1 fixed connection of casing, the flange 4 of giving vent to anger is connected with casing 1, and the end of giving vent to anger of cooling core 2 is provided with out gas head 21, is provided with recess 41 on the outer wall of the flange 4 of giving vent to anger, is provided with on the gas head 21 and is used for sealed sealing washer 211, goes out gas head 21 and links up with the flange 4 of giving vent to anger, and sealing washer 211 inlays and forms seal structure in recess 41.

In the EGR cooler that this application provided, cooling core 2 is connected with a gas outlet 21, a gas outlet 21 and 4 soft connections of flange of giving vent to anger, be connected through the seal structure that recess 41 and sealing washer 211 cooperation formed promptly, not only the sealing of cooler has been ensured, receive thermal stress when cooling core 2, when thermal expansion power or thermal fatigue, axial motion can carry out, thereby offset this part external force, certain deformation space has been provided, thereby reduce the deformation of spare part, prevent damage, the reliability of cooler has been improved.

Optionally, the air outlet flange 4 is provided with two grooves 41, and the air outlet head 21 is provided with two sealing rings 211.

The double sealing rings 211 can greatly improve the air tightness, further ensure the sealing effect and ensure the performance of the cooler.

Optionally, the gas outlet head 21 includes a gas inlet end 212 and a gas outlet end 213, the gas inlet end 212 is used for being connected with the cooling core 2, the sealing ring 211 is disposed on the gas outlet end 213, and the gas outlet end 213 is hermetically connected with the gas outlet flange 4 through the sealing ring 211.

Go out the gas head 21 and be connected with cooling core 2, can be provided with the structure that is used for fixed cooling core 2 on the gas head 21 to fix cooling core 2, can also link up cooling core 2 and flange 4, the intercommunication pipeline of giving vent to anger.

Optionally, the outlet tip 213 is fixed to the upper portion of the inlet tip 212.

Optionally, the outer diameter of outlet tip 213 is smaller than the outer diameter of inlet tip 212.

In practical application, the cooling core 2 is generally provided with many with the cooling tube, therefore the one end diameter that goes out gas head 21 and cooling core 2 and be connected needs great, and the diameter of the one end that goes out gas head and the flange 4 of giving vent to anger is connected is less, and then cooperates the flange 4 of giving vent to anger to link up.

Optionally, the air outlet flange 4 is connected with the housing 1 through bolts.

The air outlet flange 4 can be connected with the shell 1 through bolts, the detachable effect is achieved, and the installation and the maintenance are convenient.

Optionally, a fixing bracket is arranged on the housing 1, and the fixing bracket is used for fixing the housing 1.

Optionally, the air inlet joint 3 is fixedly connected with the air inlet end of the cooling core 2, and the air inlet joint 3 is welded with the housing 1.

Optionally, the air conditioner further comprises an air inlet flange 5, and the air inlet flange 5 is fixedly connected with the shell 1.

Optionally, the air inlet flange 5 is fixedly connected with the air inlet joint 3 through bolts.

It is intended that the foregoing description of the disclosed embodiments enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An EGR cooler, comprising: casing, cooling core, air inlet joint and the flange of giving vent to anger, the air inlet joint with casing fixed connection, the flange of giving vent to anger with the casing is connected, the end of giving vent to anger of cooling core is provided with out the gas head, be provided with the recess on the outer wall of the flange of giving vent to anger, it is used for sealed sealing washer to be provided with on the gas head to give vent to anger, go out the gas head with the flange of giving vent to anger links up, the sealing washer is set in form seal structure in the recess.

2. The EGR cooler of claim 1 wherein said outlet flange is provided with two of said grooves and said outlet head is provided with two of said sealing rings.

3. The EGR cooler of claim 1 wherein the outlet head comprises an inlet end and an outlet end, the inlet end is adapted to be connected to the cooling core, the sealing ring is disposed on the outlet end, and the outlet end is sealingly connected to the outlet flange via the sealing ring.

4. The EGR cooler of claim 3 wherein said outlet stub is secured to an upper portion of said inlet stub.

5. The EGR cooler of claim 3 wherein the outlet stub has an outer diameter smaller than an outer diameter of the inlet stub.

6. The EGR cooler of any of claims 1 through 5, wherein the outlet flange is bolted to the housing.

7. The EGR cooler according to any of claims 1 to 5, characterized in that a fixing bracket is provided on the housing for fixing the housing.

8. The EGR cooler according to any one of claims 1 through 5, wherein the intake joint is fixedly connected to an intake end of the cooling core, and the intake joint is welded to the housing.

9. The EGR cooler of any of claims 1 through 5, further comprising an intake flange fixedly connected with the housing.

10. The EGR cooler of claim 9 wherein said intake flange is fixedly attached to said intake adapter by bolts.